I am an Early Childhood Educator and had to pay to be CPR/first-aid certified. I received an official tax receipt from my employer. Where do I enter this amount?

You can claim this as an employment expense as long as your employer issued you a T200 (Declaration of Employment) stating that you were required to have this expense as a term of your employment.

https://turbotax.community.intuit.ca/replies/2647650